Measurement of the Strong Coupling alpha_S from the Four-Jet Rate in e+e- annihilation

Details Measurement of the Strong Coupling alpha_S from the Four-Jet Rate in e+e- annihilation Measurement of the Strong Coupling alpha_S from the Four-Jet Rate in e+e- annihilation

2004-12-20

arxiv.org/abs/hep-ex/0412055v1

Nucl.Phys.Proc.Suppl.152:11-14,2006

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 2 figures, contribution to QCD'04

Scientific paper

10.1016/j.nuclphysbps.2005.08.00

Data from e+e- annihilation into hadrons at centre-of-mass energies between 91 GeV and 209 GeV are used to study the four-jet rate as a function of the Durham algorithm's resolution parameter y_cut. The four-jet rate is compared to next-to-leading order calculations that include the resummation of large logarithms. The strong coupling measured from the four-jet rate is 0.1208 +-0.0006(stat.)+-0.0021(exp.)+-0.0019(had.)+-0.0024(scale) in agreement with the world average.

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